/**
 * Copyright (c) 2007-2008 Nearchos Paspallis
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

/**
 * AspectSense
 *
 * Middleware for annotation-based, context-aware and adaptive services for
 * mobile and ubiquitous computing
 *
 * This project is an open-source effort, initiated by Nearchos Paspallis as
 * part of his PhD work at the University of Cyprus (http://www.ucy.ac.cy).
 *
 * More information about the project is available at "http://aspectsense.org".
 */

package org.aspectsense.util;

import java.io.Serializable;
import java.util.Map;
import java.util.Set;
import java.util.Collection;
import java.util.HashSet;

/**
 * @author Nearchos Paspallis [nearchos@cs.ucy.ac.cy]
 *         Date: Jan 9, 2008
 *         Time: 3:16:28 PM
 */
public class Miscellaneous
{
    public static String partAfterLastDot(final Object object)
    {
        final String string = object.toString();

        int index = string.lastIndexOf('.');
        if(index == -1)
        {
            return string;
        }
        else
        {
            return string.substring(index + 1);
        }
    }

    public static String formatDoubleWithTwoDigitsMax(final double d)
    {
        final String dString = Double.toString(d);

        final int dotIndex = dString.indexOf(".");

        return dString.substring(0, Math.min(dString.length(), dotIndex + 3));
    }

    public static final Map<String, Serializable> EMPTY_STRING_TO_SERIALIZABLE_MAP
            = new Map<String, Serializable>()
    {
        public int size() {
            return 0;
        }
        public boolean isEmpty() {
            return true;
        }
        public boolean containsKey(Object key) {
            return false;
        }
        public boolean containsValue(Object value) {
            return false;
        }
        public Serializable get(Object key) {
            return null;
        }
        public Serializable put(String key, Serializable value) {
            throw new UnsupportedOperationException();
        }
        public Serializable remove(Object key) {
            return null;
        }
        public void putAll(Map<? extends String, ? extends Serializable> m) {
            throw new UnsupportedOperationException();
        }
        public void clear() {
            // empty
        }
        public Set<String> keySet() {
            return new HashSet<String>();
        }
        public Collection<Serializable> values() {
            return new HashSet<Serializable>();
        }
        public Set<Entry<String, Serializable>> entrySet() {
            return new HashSet<Entry<String, Serializable>>();
        }
    };
}